TinyXML 2.6.2

TinyXML is a simple, small, C++ XML parser that can be easily
integrated into other programs.

It is built using a custom Makefile which is configured by editing
variables in the top; this file must be patched to build with Clang.
Installation is done by the Homebrew script instead of the Makefile.

Tested on Mountain Lion 10.8.4 using Xcode 4.6.1.